• Census 2027 will, for the first time since Independence, enumerate caste for all citizens via an "open column" (write-in) method rather than pre-defined drop-down lists [S3][S4].
• Government officials disclosed that OBC lists (Central and State) were considered but dropped as the basis for caste enumeration because they list "classes," not "castes" [S1].
• SC/ST enumeration continues via the established Presidential Lists mechanism; only the "OBC/Others" category uses the open-column approach [S1][S4].
• High relevance for GS-I (Society) and GS-II (Governance/Polity) — tests understanding of census methodology, caste enumeration history, and OBC classification law.

2. Why in the News

• The Hindu (4 September 2026) reported that the Union government considered, then rejected, using Central/State OBC lists to enumerate castes in Census 2027, since these lists contain occupational/descriptive "classes" (e.g., "those engaged in begging") rather than discrete castes [S1].
• The decision followed assessment of whether methodologies from State caste surveys (Bihar, Telangana) could be replicated nationally [S1].
• The open-column method has drawn demands from OBC groups and Opposition leaders (Rahul Gandhi, Mallikarjun Kharge) for specific caste-wise listing and enumeration [S1].
• A pre-test/rehearsal of Census 2027's second phase in mid-2026 used the open-column format for caste, with final methodology pending trial feedback [S4].

3. Background & Evolution

• 2011 Socio-Economic and Caste Census (SECC): first major post-Independence attempt to capture caste data at scale; recorded over 46 lakh distinct caste names due to spelling variation, regional identity, and self-identification differences — its caste data was never officially released owing to quality concerns [S1][S4].
• Census has historically enumerated SC/ST using Presidential Lists (under Articles 341/342) but not other castes since 1931 (last full caste census) [S1].
• 30 April 2025: Cabinet Committee on Political Affairs (CCPA) decided to include caste enumeration in Census 2027 [S3].
• Census of India 2027 approved by Cabinet in two phases; Population Enumeration (PE) phase scheduled for February 2027, capturing demographic, socio-economic, migration and caste data [S3].
• Mid-2026: pre-test/rehearsal conducted using the open-column caste format [S4].

4. Core Static Facts

Item	Detail
Implementing body	Office of the Registrar General and Census Commissioner of India (RGCCI), Ministry of Home Affairs [S3]
Enabling decision	CCPA approval, 30 April 2025; Cabinet approval of Census 2027 scheme [S3]
Phases	Two-phase Census 2027; caste enumeration in second phase (Population Enumeration, Feb 2027) [S3]
Social group categories collected	SC, ST, OBC, Others [S3]
SC/ST enumeration method	Presidential Lists (pre-existing codified lists) [S1][S4]
Other castes (OBC/General) method	Open column — respondent states caste; enumerator records verbatim [S1][S4]
Precedent data point	2011 SECC recorded 46 lakh+ caste names; data never released [S1][S4]
Reason OBC lists rejected	OBC Central/State lists classify by "class"/occupation (e.g., begging communities), not discrete castes [S1]
State caste surveys referenced	Bihar and Telangana caste surveys [S1]

5. Multi-Dimensional Analysis

Social

• Caste enumeration directly affects OBC sub-categorisation debates and claims for reservation quotas by specific communities [S1].
• Open-column method risks fragmenting caste identity data (as seen in 2011 SECC's 46 lakh names), complicating policy use [S1][S4].

Legal/Constitutional

• SC/ST enumeration remains anchored to Presidential Lists under Articles 341/342; no equivalent constitutional list exists for OBCs, explaining the "classes not castes" distinction [S1].
• OBC lists (Central List under the National Commission for Backward Classes framework) were designed for reservation eligibility, not demographic taxonomy — a mismatch exposed by this decision [S1].

Administrative

• Coordinating a uniform open-column methodology across states with differing caste survey experiences (e.g., Bihar 2023, Telangana 2024) poses standardization challenges [S1].
• Risk of enumerator-level inconsistency and data-cleaning burden at record scale (cf. 46 lakh names in 2011) [S1][S4].

Ethical/Governance

• Balancing demand for precise caste enumeration (raised by Opposition) against practical data-quality concerns that caused 2011 SECC caste data suppression [S1][S4].
• Transparency question: final caste-column methodology to be revealed only after rehearsal feedback is assessed [S4].

Political

• Opposition leaders (Rahul Gandhi, Mallikarjun Kharge) have questioned the open-column method's utility, pushing for explicit caste listing [S1].

6. Recent Developments (last 12-18 months)

• 30 April 2025: CCPA decides to include caste enumeration in Census 2027 [S3].
• Mid-2026: Census 2027 second-phase rehearsal/pre-test conducted using open-column caste format [S4].
• 4 September 2026: The Hindu reports government dropped use of OBC lists for census caste enumeration, citing the "classes not castes" rationale [S1].
• Ongoing: Opposition demand for specific caste-wise listing instead of open-column format [S1].

7. Prelims Hooks

• Census 2027 will conduct caste enumeration for the first time since Independence across all social groups.
• Caste enumeration decision approved by the Cabinet Committee on Political Affairs (CCPA) on 30 April 2025.
• Census 2027 will be conducted in two phases; caste data collected in the second phase (Population Enumeration).
• Population Enumeration phase of Census 2027 scheduled for February 2027.
• SC and ST communities continue to be enumerated using the Presidential Lists, as historically done.
• Other castes (OBC/General) to be enumerated via an "open column" (write-in) method, not a drop-down/pre-listed format.
• Government dropped use of OBC Central and State lists for caste enumeration because these lists represent "classes," not "castes."
• Example cited: some OBC list entries describe occupational groups like "those engaged in begging," not castes.
• The precedent for concern: 2011 Socio-Economic and Caste Census (SECC) recorded over 46 lakh distinct caste names.
• SECC 2011 caste data was never officially released due to data-quality concerns.
• State caste surveys referenced as possible models: Bihar and Telangana.
• Implementing agency for Census: Registrar General and Census Commissioner of India, under the Ministry of Home Affairs.
• Social group categories to be recorded in Census 2027: SC, ST, OBC, Others.
• Opposition leaders demanding specific caste listing (not open-column): Rahul Gandhi and Mallikarjun Kharge.

8. Mains Relevance

• GS-I: Society — Social empowerment, communalism, regionalism & secularism; salient features of Indian society, diversity of India.
• GS-II: Governance — Welfare schemes for vulnerable sections; issues relating to development and management of Social Sector; mechanisms/bodies for protection of vulnerable sections (NCBC, reservation policy).
• Possible Mains question stems: 1. Discuss the methodological challenges in conducting a caste-based census in India. Why is the distinction between 'caste' and 'class' significant in this context? (GS-I/II) 2. Critically examine the implications of adopting an 'open column' method for caste enumeration in Census 2027, drawing lessons from the 2011 Socio-Economic and Caste Census. (GS-II) 3. Reservation policy in India rests on classification of Backward Classes as a 'class' rather than a 'caste'. Discuss the constitutional and administrative significance of this distinction. (GS-II)

9. Related Topics to Study Next

• 2011 Socio-Economic and Caste Census (SECC) — direct precedent showing the risks of caste self-identification at scale.
• Mandal Commission and OBC reservation (1980, Indra Sawhney case, 1992) — origin of the Central OBC List and 27% quota.
• National Commission for Backward Classes (NCBC) — constitutional body (Art. 338B) governing OBC list inclusion/exclusion.
• Bihar and Telangana caste surveys — state-level precedents for enumeration methodology.
• Articles 341 & 342 — constitutional basis for SC/ST Presidential Lists, contrasted with absence of similar OBC provision.
• Sub-categorisation of OBCs (Justice Rohini Commission) — related debate on precise caste-level data needs within OBCs.
• Census Act, 1948 — legal framework governing census conduct and confidentiality of data.
• Delimitation and caste-based political representation — broader context of demographic data's political stakes.

10. Common Errors / Trap Areas

• Do not confuse OBC Central List (maintained under NCBC/Article 342A-adjacent mechanisms for reservation) with a caste census list — they serve different purposes.
• Do not assume SC/ST enumeration also uses the open-column method — it uses Presidential Lists, unlike OBC/Others.
• Do not conflate the 2027 Census caste enumeration with the 2011 SECC — SECC data was never officially released; 2027 Census is a fresh, distinct exercise using lessons from SECC's shortcomings.
• Avoid misattributing the caste enumeration decision to the Census Act, 1948 amendment — it stems from a CCPA Cabinet decision (30 April 2025), not a legislative amendment.
• Do not assume Census 2027 caste data collection is a one-phase exercise — it is split into two phases, with caste data in the second (Population Enumeration) phase.

11. Sources

• [S1] Govt. dropped use of OBC lists for Census as those featured 'classes, not castes', say officials — The Hindu — https://www.thehindu.com/todays-paper/2026-09-04/th_chennai/articleGAMGG2QAS-16421425.ece — (tier: 4)
• [S2] Cabinet approves Caste enumeration in the upcoming Census — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2125526 — (tier: 1)
• [S3] Population Census-2027 to be conducted in two phases along with enumeration of castes — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2133845&reg=48&lang=2 — (tier: 1)
• [S4] Population Census 2027 Pre-Test Uses 'Open Column' Method for Caste Enumeration — The Wire — https://m.thewire.in/article/caste/population-census-2027-pre-test-uses-open-column-method-for-caste-enumeration — (tier: 4)